687500014 has 4 divisors (see below), whose sum is σ = 1031250024. Its totient is φ = 343750006.

The previous prime is 687500003. The next prime is 687500053. The reversal of 687500014 is 410005786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 410005786 = 2 ⋅205002893.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171875002 + ... + 171875005.

It is an arithmetic number, because the mean of its divisors is an integer number (257812506).

Almost surely, 2^687500014 is an apocalyptic number.

687500014 is a deficient number, since it is larger than the sum of its proper divisors (343750010).

687500014 is a wasteful number, since it uses less digits than its factorization.

687500014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343750009.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 687500014 is about 26220.2214712233. The cubic root of 687500014 is about 882.5870898224.

The spelling of 687500014 in words is "six hundred eighty-seven million, five hundred thousand, fourteen".